ArticleEvolution letters2018
Don't throw out the sympatric speciation with the crater lake water: fine-scale investigation of introgression provides equivocal support for causal role of secondary gene flow in one of the clearest examples of sympatric speciation.
Article in Evolution letters, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
18 citing papers in PubMed.
- Parallel and non-parallel features of adaptive radiation in Yucatán pupfishes.bioRxiv : the preprint server for biology · 2025Article
- Phenotypic covariation predicts diversification in an adaptive radiation of pupfishes.Ecology and evolution · 2024Article
- Parallel evolution of integrated craniofacial traits in trophic specialist pupfishes.Ecology and evolution · 2024Article
- Exon-based Phylogenomics and the Relationships of African Cichlid Fishes: Tackling the Challenges of Reconstructing Phylogenies with Repeated Rapid Radiations.Systematic biology · 2023Article
- All quiet on the western front? The evolutionary history of monogeneans (Dactylogyridae: Cichlidogyrus, Onchobdella) infecting a West and Central African tribe of cichlid fishes (Chromidotilapiini).Parasite (Paris, France) · 2023Article
- Is sympatric speciation in nature only possible with micro-parapatry? A new case study of glacial lake cyprinid fishes.National science review · 2022Article
- Extensive gene flow in secondary sympatry after allopatric speciation.National science review · 2022Article
- Sympatric or micro-allopatric speciation in a glacial lake? Genomic islands support neither.National science review · 2022Article
- Trophic specialization on unique resources despite limited niche divergence in a celebrated example of sympatric speciation.Ecology of freshwater fish · 2022Article
- Article
- Divergent Selection and Primary Gene Flow Shape Incipient Speciation of a Riparian Tree on Hawaii Island.Molecular biology and evolution · 2020Article
- Comparing Adaptive Radiations Across Space, Time, and Taxa.The Journal of heredity · 2020Article
- The paradox behind the pattern of rapid adaptive radiation: how can the speciation process sustain itself through an early burst?Annual review of ecology, evolution, and systematics · 2019Article
- Adaptive Radiation from a Chromosomal Perspective: Evidence of Chromosome Set Stability in Cichlid Fishes (Cichlidae: Teleostei) from the Barombi Mbo Lake, Cameroon.International journal of molecular sciences · 2019Article
- Searching for Sympatric Speciation in the Genomic Era.BioEssays : news and reviews in molecular, cellular and developmental biology · 2019Review
- How to Investigate the Origins of Novelty: Insights Gained from Genetic, Behavioral, and Fitness Perspectives.Integrative organismal biology (Oxford, England) · 2019Article
- Speciation in sympatry with ongoing secondary gene flow and a potential olfactory trigger in a radiation of Cameroon cichlids.Molecular ecology · 2018Article
- Long-distance dispersal over land by fishes: extremely rare ecological events become probable over millennial timescales.Proceedings. Biological sciences · 2018Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
Abstract
Genomic data has revealed complex histories of colonization and repeated gene flow previously unrecognized in some of the most celebrated examples of sympatric speciation and radiation. However, much of the evidence for secondary gene flow into these radiations comes from summary statistics calculated from sparse genomic sampling without knowledge of which specific genomic regions introgressed. This tells us little about how gene flow potentially influenced sympatric diversification. Here, we investigated whole genomes of Barombi Mbo crater lake cichlids for fine-scale patterns of introgression with neighboring riverine cichlid populations. We found evidence of secondary gene flow into the radiation scattered across <0.24% of the genome; however, from our analyses, it is not clear if the functional diversity in these regions contributed to the ecological, sexual, and morphological diversity found in the lake. Unlike similar studies, we found no obvious candidate genes for adaptive introgression and we cannot rule out that secondary gene flow was predominantly neutral with respect to the diversification process. We also found evidence for differential assortment of ancestral polymorphisms found in riverine populations between sympatric sister species, suggesting the presence of an ancestral hybrid swarm. Although the history of gene flow and colonization is more complicated than previously assumed, the lack of compelling evidence for secondary gene flow's role in species diversification suggests that we should not yet rule out one of the most celebrated examples of sympatric speciation in nature without a more thorough investigation of the timing and functional role of each introgressed region.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.